<?php
/**
 * @package		OpenCart
 * @author		Daniel Kerr
 * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
 * @license		https://opensource.org/licenses/GPL-3.0
 * @link		https://www.opencart.com
*/

/**
* DB class
*/
class DB {
	private $adaptor;

	/**
	 * Constructor
	 *
	 * @param	string	$adaptor
	 * @param	string	$hostname
	 * @param	string	$username
     * @param	string	$password
	 * @param	string	$database
	 * @param	int		$port
	 *
 	*/
    public function __construct($adaptor, $hostname, $username, $password, $database, $port = NULL) {
        $class = 'DB\\' . $adaptor;

        if (class_exists($class)) {
            $this->adaptor = new $class($hostname, $username, $password, $database, $port);
        } else {
            throw new \Exception('Error: Could not load database adaptor ' . $adaptor . '!');
        }
    }

    public function getAdaptor()
    {
        return $this->adaptor;
    }

    /**
     *
     *
     * @param	string	$sql
     *
     * @return	array
     */
    public function query($sql) {
        return $this->adaptor->query($sql);
    }

    /**
     *
     *
     * @param	string	$value
     *
     * @return	string
     */
    public function escape($value) {
        return $this->adaptor->escape($value);
    }

    /**
     *
     *
     * @return	int
     */
    public function countAffected() {
        return $this->adaptor->countAffected();
    }

    /**
     *
     *
     * @return	int
     */
    public function getLastId() {
        return $this->adaptor->getLastId();
    }

    /**
     *
     *
     * @return	bool
     */
    public function connected() {
        return $this->adaptor->connected();
    }
}